Thank you. Last summer, I didn't understand what was being said just by looking at this IntelliJ screen, and I didn't have much passion for it, but after watching the lecture, I naturally understood it. I tried to apply the singleton and DI that I learned in the lecture to the original code I created, and I failed, and I think I realized a lot on my own. In addition, I decided that I should focus on Spring in order to get into the company I want now. Thank you, Younghan.